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<p>This paper investigates the role of aging methods, evaluation techniques, and the integration of nanomaterials in enhancing the aging resistance of asphalt binders and mixtures. The study explores both asphalt mixtures and asphalt binders, detailing aging processes and simulation methods such as AASHTO R 30 and RTFOT and their effectiveness in replicating short-term and long-term aging. The paper discusses several advanced evaluation techniques, including rheological assessment, atomic force microscopy (AFM), Fourier Transform Infrared Spectroscopy (FTIR), X-ray diffraction (XRD), and Gel Permeation Chromatography (GPC), as well as the corresponding indices used to quantify aging. Additionally, various preparation methods for nano-modified asphalt binders, including high shear, low shear, and ultrasonication, are examined, focusing on achieving uniform dispersion of nanomaterials. These methods involve mixing at varying speeds (500–6000&#xa0;rpm), temperatures (120–175&#xa0;°C), and concentrations (0.02%–12%). Nanomaterials such as nanosilica, nano-TiO<sub>2</sub>, nano-ZnO, nano-clay, graphene oxide, carbon nanotubes, and emerging materials like graphene nanoplatelets, nanocellulose, and nano-alumina are shown to significantly improve the aging resistance and mechanical properties of asphalt binders. The feasibility of incorporating these nanomaterials in asphalt pavements is also assessed from environmental, economic, and technical perspectives. The paper concludes that nanomaterials are promising for improving asphalt pavements’ aging resistance and overall performance. However, challenges remain regarding cost, uniform dispersion, and large-scale application. Further research is needed to optimize nanomaterial integration and assess their long-term impacts on pavement durability and sustainability.</p>

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A Mini-Review on Incorporating Nanomaterials in Asphalt Pavements with Emphasis on the Aging Phenomenon

  • 期刊论文

  • 发表日期：

    2026年5月28日

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  • Pooyan Ayar,
  • Hossein Tavakoli

摘要

This paper investigates the role of aging methods, evaluation techniques, and the integration of nanomaterials in enhancing the aging resistance of asphalt binders and mixtures. The study explores both asphalt mixtures and asphalt binders, detailing aging processes and simulation methods such as AASHTO R 30 and RTFOT and their effectiveness in replicating short-term and long-term aging. The paper discusses several advanced evaluation techniques, including rheological assessment, atomic force microscopy (AFM), Fourier Transform Infrared Spectroscopy (FTIR), X-ray diffraction (XRD), and Gel Permeation Chromatography (GPC), as well as the corresponding indices used to quantify aging. Additionally, various preparation methods for nano-modified asphalt binders, including high shear, low shear, and ultrasonication, are examined, focusing on achieving uniform dispersion of nanomaterials. These methods involve mixing at varying speeds (500–6000 rpm), temperatures (120–175 °C), and concentrations (0.02%–12%). Nanomaterials such as nanosilica, nano-TiO2, nano-ZnO, nano-clay, graphene oxide, carbon nanotubes, and emerging materials like graphene nanoplatelets, nanocellulose, and nano-alumina are shown to significantly improve the aging resistance and mechanical properties of asphalt binders. The feasibility of incorporating these nanomaterials in asphalt pavements is also assessed from environmental, economic, and technical perspectives. The paper concludes that nanomaterials are promising for improving asphalt pavements’ aging resistance and overall performance. However, challenges remain regarding cost, uniform dispersion, and large-scale application. Further research is needed to optimize nanomaterial integration and assess their long-term impacts on pavement durability and sustainability.